BenQ FP731 17" LCD Monitor "c5707 testing" Questions

...testing) then I saw Q759 (C5707) get hot. Checking the others shows that they should be driving into about 420 ohms on the primary side of the transformer for the flourescent lights (backlights) but ...

...on board or remove to test ? many thanks for your help viziks....andy If you are referring to the C5707 inverter driver transistors, you can test them in circuit with an ohmmeter. Usually one pair ...

still no display the voltage output of PQ3RD23 is 3.3V. i've tested all four c5707 transistor. One of them is shorted so i replaced it with a new one. Still no display on my LCD. what could be the ...

testing, If the damage C5707 meeting on the need to replace the high-voltage wire coils (most of the damage to the C5707 is Controls 72.9% Circle aroused), 5 : measurement of high voltage power supply

testing easy. We found that the two driver transistors marked C5707 were almost completely shorted. You will identify these as being two of four identical black components with a built in heat sink at

These can be replaced, but can be costly! Its a problem with the inverter. check the 4 transistors, C5707 near the connectors for the backlight. If none are defective, look for the PF751 FUSE. It sure

...rectangular capacitors (usually grey) between a pair of transistors . These transistors have a code C5707 on them. (2sc5707) What usually happens is the top capacitor gets cooked from the heat and ...

...just tried to push a 220$ warrenty on me which costs more then a newer better monitor Check the C5707 transistors especially its corrensponding hfe value. Replace caps Try to resolder all ...

Gone from blinkid led to lights out. Hi, I did do the C5707 transistor change, and I went from blinking LED to lights out after 2-3 sec. It starts fine, but backlight disappear after 2-3 sec, I can ...

...C5707 transistors were replaced and you save the other two. I had burn in test this LCD monitor for many days and it worked perfectly fine. Conclusion- Whether you repair the DELL E173FPB LCD Monitor ...